list = [('XHTML', 'CSS'),('Javaxrpt', 'Python')]
for a,b in list:
    print a,b

for line in open('a.txt'):
    print line.upper()

L1 = [1, 2, 3]
L2 = ['A', 'a', 'c', 'd']
print zip(L1, L2)
print map('a',L1, L2)
